gtk_tree_view_scroll_to_cell does not work ?

["Miroslav Rajcic" <rajcic sokrates hr>]

I am having a method that selects an tree view item and ensures that the 
item is visible.
To ensure the visiblity, I am using the gtk_tree_view_scroll_to_cell method.

I've noticed that this method does not seem to work always. When the tree 
view is populated so much that it needs to be scrolled in order to make cell 
visible, gtk_tree_view_scroll_to_cell will frequently fail to do so!

If someone is interested to test this, you can do with my Notecase project 
(http://notecase.sf.net)

Steps to reproduce:
1. Start notecase and load the "help.ncd" document
2. Use "Tree/Expand All" menu item to make sure that the tree view takes 
more space than available (scroll bar appears)
3. Select last item in the tree view
4. Now press "Insert" key to insert the new node after the selected note

Note that the step 4 should cause the new note to be visible within the tree 
view, but it is not often the case and the tree view is not scrolled to show 
the new note.

Sometimes, 1st try seems to work correctly, but any other subsequent try 
(adding more and more notes with "Ins" key press) does not work!
Mostly it doesn't work right from the start.

You can find the example code within the Notecase code at "callbacks.cpp".
void on_menu_insert_node - method that inserts new node
void SelectNodeByIdx - method that performs actual selection and scrolling

Note that I've tried replacing the gtk_tree_view_scroll_to_cell with the 
following code, but that doesn't work too:
  GdkRectangle rect;
  gtk_tree_view_get_cell_area(treeview, path2, NULL, &rect);
  gtk_tree_view_scroll_to_point(treeview, -1, rect.y);

I've tested and can confirm this behaviour both on Linux (Ubuntu 8.10 i386) 
and Windows (latest GTK 2.14.5 from www.gtk.org).

Does anyone have any constructive tip or workaround ?
Can anyone confirm the problem ?

This seems like a major problem to me, because GtkTreeView is one of the 
basic components.

TIA,
 Miroslav Rajcic